Fastener



FIG. 1 is an exploded perspective view of a fastener showing my new design;

FIG. 2 is a top plan view thereof in the attached position of the parts selectively rotated to position for snap action attachment and detachment;

FIG. 3 is a bottom plan view of FIG. 2 with the parts rotated 90° to their positively locked on position of normal use;

FIG. 4 is a typical side elevational view of FIG. 2;

FIG. 5 is a left end elevational view of FIG. 2; and

FIG. 6 is a right end elevational view of FIG. 2. 

The ornamental design for a fastener, as shown. 